Home / 12,789.76-19,184.68-3,555.76

Finding the Fourth Proportional to 12,789.76, 19,184.68 and 3,555.76

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Solution

The fourth proportional to 12,789.76, 19,184.68 and 3,555.76 is: 5,333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.76 : 19,184.68 = 3,555.76 : x
  2. Step 2: Convert to fraction form
    12,789.76/19,184.68 = 3,555.76/x
  3. Step 3: Cross multiply
    12,789.76x = 19,184.68 × 3,555.76
  4. Step 4: Simplify right side
    12,789.76x = 68,216,117.76
  5. Step 5: Solve for x
    x = 68,216,117.76/12,789.76
  6. Step 6: Final answer
    x = 5,333.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.